Mounting of the doors or covers of pressure vessels



Nov. 4, 1941. H. M. H. PICKARD 2,261,523

MOUNTING OF THE DOORS OR COVERS OF PRESSURE VESSELS' Filed Feb. '7; 1941Patented Nov. 4, 1941 MOUNTING OF THE DOORS R COVERS OF PRESSURE VESSELSHenry Maurice Hattersley Pickard, Leeds,

England Application February 7, 1941, Serial No. 377,931 In GreatBritain November 13, 1939 and its mounting, showing also the adjacentpart Claims.

This invention relates to the doors or covers of pressure vessels suchas vulcanisers, cures, kiers, autoclaves, retorts and the like andconcerns hinge mountings for said doors or cover which comprise on or apair of outwardly projecting brackets carried by the body of thevessel,a single hinge pin or a pair of axially aligned hinge pins supported bythe bracket or brackets and a pair of arms connected to the hinge pin orrespective hinge pins.

An object of the invention is to provide simple means for enabling adoor or cover mounted in the manner aforesaid to be readily adjusted bymovement in a plane parallel to the mouth of the vessel, in a directionapproximately perpendicular to the hinge axis;

A further object of theinvention is to effect the aforesaid adjustmentby pivotally mounting the door on one of th hinge arms so that the doorcan tilt on the pivot under the control of a screw device to change itsposition laterally with respect to the vessel mouth. Another object isto provide a mounting having the aforesaid characteristics and which isreversible to enable the door to be mounted for either righthand orleft-hand opening and with the pivot below the level of the adjustingdevice in each case.

A still further object of th invention is to provide for adjusting thepositions of the hinge arms along the hinge axis in addition toproviding the aforesaid tilting movement, therebyaffording adjustment ina direction parallel to that of the hinge axis. This willpermit'repositioning of the door' to compensate for slight displacementthereof in a direction parallel to the hinge axis resulting from tiltingmovement about the pivot, as well as enabling intentional adjustment tobe made in the said direction.

Another object of the invention is toprovide a hinge mounting for avessel door which in addition to afiording the adjustment aforesaid,readily enables the door when set in a particular position to be bodilymoved towards or away from the vessel mouth; thereby permitting suchadjustment of the'door as will ensure uniform seating pressure at allpoints around'the door.

In, order that the invention may be readily understood, reference isdirected to the accompanying drawing illustrating a door mounting of apractical form in accordance thereith and wherein Figure 1 is a frontelevation of the door and its mounting,

of the vessel, and

Figure 3 is a side elevation.

In the construction illustrated a plate-like supporting bracket I has apair of side extensions Ia, by means of which the bracket I can. beattached to the mouthpiece or endpie-ce 2 of the pressure vessel 3. Theextensions Ia extend behind and are bolted to the projecting flange 2aof the mouthpiece 2. The bracket I supports a single vertical hinge pinI5 which extends through upper and lower bearing sockets I5a, I521,which are each connected to the bracket I by means of screw studs I heldby nuts I5d, with ability for adjustment forwardly or rearwardly, asrequired. The hinge pin I 4 is also capable of adjustment vertically byfreely sup-- porting its lower end on an adjusting screw [6 screwed intothe lower socket [5b. To the hinge.

pin 7 I4 are clamped the lower and upper hinge arms Ila, Ilb which areof trough or channel shape, soas to accommodate within themiour bossesI8a, I 8a, I81), I 80, on the cover 6, the two latter (I811, I80) beingprovided with flat faces I8d. In the floors of the trough or channellike arms Ila, Ilb, opposite the bosses'l8a, I 8b,:l8c, are openingswhich are slightly larger in diameter than the shanks of the studs I911,I927 and I90 which pass through said openings and screw into the bossesI'8a, I81); I80. The stud I91) however is provided with a neck: orcollar which fits its opening in the arm Ila, so as to act as a pivot orfulcrum about which the door 6 can'swing, said pivot or fulcrum being soarranged with respect to the centre of gravity of the door that thereisa tendency for the door 6 to swing upon this pivot stud 1911- in thedirection indicated by arrow B. This swinging movement is limited by ascrew stud 2B which engages a tapped hole Zlb in the end wall of th arm.llb and bears against the face IBd of the boss I8c. The seat- Figure 2is a fragmentary plan view of. the door ing" of'the door G'may thus beadjustedlaterally, the door 6 being clamped to'the arms Ila, llb, byscrewing down the studs lfla, I92) and-19c.

In the drawing, the door 6 is shown as mounted for left-hand opening. Ifthe door is to be mounted for right-hand opening, the same com ponents'will suflice without the necessity of any metal cutting or other arduousoperation being performed. The bracket I is first reversed-and bolted onthe opposite side of the mouthpiece 2 and the door 6 swung round throughluntil the boss I8b reaches position 0 and boss 18c reaches position D.The two arms Ila, I lb are then transferred to positions diametricallyor diagonally opposite to those shown in Figure 1, so that arm 11a, isabove arm [1b. The pivot bolt l9b is now used to engage the boss Hlc(which is at position D) and the door-swing limiting or adjusting screw20 engages with the tapped hole Zla of arm Ila.

The invention is applicable to the doors or covers of cylindricalvessels, in general, provided that the locking means for the door orcover is such as to be unaffected by the turning movement of the door orcover, and is especially applicable to a door secured by latchesprovided on the body of the vessel and engaging over the rim of thedoor.

The hinge mounting above described is of such a form as to be capable offitting for either right or left hand op'ening about a vertical axis orindeed for opening about an axis other than vertical, without thenecessity of any metal cutting or other operations being efiected duringthe process of erecting the door or cover.

This enables a horizontal or inclined cylindrical pressure vessel whichis subject to excessive localised corrosion. for example. along thebottom to be turned about the longitudinal axis to bring a fresh part ofthe barrel to the bottom, the door or cover being refitted in the sameposition it formely occupied.

I claim:

1. A hin e mountin for the door of a cylindrical pressure vesselcomprising a bracket adapted for attachment to the vessel to outwardlyproject therefrom, a hinge pin supported by said bracket. a pair of armsattached to said hin e pin, bosses on the door in the regions of therespective arms. a pair of studs adapted to be screwed into saidbosses-and adapted to selectively serve as a pivot for the tiltin of thedoor, openings formed in said arms for the passage of the respectivestuds and which are of greater diameter than the shanks of said studs, aneck provided on one of the studs which enters the associated armopening as a close fit therein to provide a fulcrum about which the doorcan tilt, and a threaded hole in an end of each arm for the engagementinto the arm, other than the one which for the time being engages thefulcrum stud, of a screw which constitutes an adjustable stop forcontacting with the adjacent door boss to limit the tilting movement ofthe door, the said arrangement permitting the same pair of arms to beemployed for left-hand or right-hand opening of the door, the pivot ineither case being associated with the lowermost arm.

2. A hinge mounting for the door of a 'cylindrical pressure vesselcomprising a bracket adapted for attachment to the vessel to outwardlyproject therefrom, a pair of tubular sockets, a screw-threaded stemradially extending from each of said sockets and passing through holesformed in the bracket, screw nuts fitted on said stems for adjustablyclamping same to the bracket, an adjustable hinge-pin-supporting screwfitted in the bore of one of said sockets, a hinge pin rotatably-mountedin said sockets and supported at one end by the said adjustablesupporting screw, a pair of arms attached to said hinge pin in paralleland spaced relation, two openings formed in each of said arms, two pairsof bosses on the door, two pairs of screw studs adapted to be passedthrough the arm openings and to screw into the door bosses, said studsbeing of less diameter than the arm openings,

a neck on one of said studs which is adapted to enter an opening ineither of the arms as a close fit in said opening, said neck-fitted studconstituting a fulcrum for tilting movement of the door, a threaded holeformed in an end portion of each arm, and an adjusting screw adapted tobe fitted into a selected one of said threaded holes, said screw beingarranged to constitute an abutment for a door boss other than the one atthe fulcrum point, for the purpose of controlling the extent to whichthe door can tilt about said fulcrum point.

3. In a hinge mounting for the door of a cylindrical pressure vessel, abracket carried by said vessel and comprising pin supporting means, ahinge pin carried by said supporting means, a pair of spaced armsfixedly carried by said pin and extending over said door, each of saidarms being provided near its free end with an opening, and a pair ofstuds carried by said door in register with said openings respectivelyand being of smaller diameter than the diameter of said openings andbeing received within saidopenings, one of said studs being pro idedwith a collar of substantially the same diameter as its said opening andwhich fits snugly but rotatably therein constituting a pivot, wherebysaid door may swing about said collared stud as a pivot within the playof the non-collared stud in its opening.

4. In a hinge mounting for the door of a cylindrical pressure vessel, abracket carried by said vessel and comprising pin supporting means, ahinge pin carried by said supporting means, a pair of spaced armsfixedly carried by said pin and extending over said door, each of saidarms being provided near its free end with an opening, and a pair ofstuds carried by said door in register with said openings respectivelyand being of smaller diameter than the diameter of said openings andbeing received within said openings, one of said studs being providedwith a collar of substantially the same diameter as its said opening andwhich fits snugly but rotatably therein constituting a pivot, the armcarrying the noncollared stud being terminally provided with adjustablescrew means, and the door being provided adjacent the non-collared studwith abutment means engageable with said adjustable screw means, wherebythe degree of movement of said door about said collared stud may becontrolled.

5. In a hinge mounting for the door of a cylindrical pressure vessel, abracket carried by said vessel and comprising pin supporting means, ahinge pin carried by said supporting means, a pair of spaced armsfixedly carried by said pin and extending over said door, each of saidarms being provided near its free end with an opening, said door beingprovided with a pair of tapped bosses in register with said openingsrespectively, a pair of threaded studs screwed into said bosses andbeing of smaller diameter than the diameter of said openings and beingreceived within said openings, one of said studs being provided with acollar of substantially the same diameter as its said opening and whichfits snugly but rotatably therein constituting a pivot, the said bossreceiving the non-collared stud being provided with a fiat face on itsside toward the free end of its arm, and an adjusting screw carried bythe free end of the said arm and adapted to engage said fiat face ofsaid boss for limiting the play of said non-collared stud in its saidopening.

HENRY MAURICE HATTERSLEY PICKARD.

